477results about How to "Will not remain" patented technology

The invention discloses dual-cylinder tabletop-type selective laser melting molding equipment and a dual-cylinder tabletop-type selective laser melting molding method. The dual-cylinder tabletop-type selective laser melting molding equipment comprises a sealed molding chamber, an optical transmission system, a powder spreading device, a molding cylinder and a powder cylinder, wherein a molding platform is arranged on the upper part of the molding cylinder and the powder cylinder; a movable platform is arranged above the molding platform; the molding platform serves as a guide rail of the movable platform, so that the movable platform can move left and right on the molding platform; the molding platform is provided with a powder spreading device and a powder acquiring system; the powder acquiring system comprises a powder acquiring base platform and a powder acquiring barrel, the powder acquiring barrel is arranged on the upper part of the powder acquiring base platform. Aiming at key points of a direct precious metal molding system, namely powder recovering and clearing, the dual-cylinder tabletop-type selective laser melting molding equipment is provided with the powder acquiring structure which can be completely taken out easily, and no powder is remained on the inner corners of the molding cylinder/powder cylinder, so that material wastes in a molding process are reduced, and the dual-cylinder tabletop-type selective laser melting molding equipment can be applied to direct molding of individual parts made of precious metals such as gold, silver and platinum in the bijouterie industry.

The invention relates to a method for extracting cannabidiol from industrial hemp. The method includes crushing and drying one or more of flowers, leaves and hemp seed bran of industrial hemp, as rawmaterials, to obtain a crushed raw material the water content of which is not more than 5%; subjecting the crushed raw material to supercritical carbon dioxide extraction to obtain cannabidiol preliminary extract; performing molecular distillation after the cannabidiol preliminary extract is heated to obtain a cannabidiol-enriched product; and subjecting the cannabidiol-enriched product to supercritical fluid chromatography for separation and purification to obtain cannabidiol free of tetrahydrocannabinol and having purity higher than 99%, with macroporous resin or MCI resin or C18 silica gelbeing adopted as a stationary phase, supercritical carbon dioxide being adopted as a mobile phase, and ethanol being adopted as an entrainer. The method is simple in process and easy to operate, and solves problems that cannabidiol extracted by solution leaching methods in the prior art is low in purity, that psychotoxic component tetrahydrocannabinol is left, that a large amount of organic solvents are consumed and that environment is polluted.

The invention discloses a multi-functional laminated iron production line. The multi-functional laminated steel production line comprises a cold rolled base plate unwinding device, a seam welder, two S turning roller sets, a first or/and second thin film release device, an iron sheet laminating device and a laminated iron winding machine, which are sequentially arranged in a conveying direction of metal base plates; the metal base plate from the seam welder enters the iron sheet laminating device after being tensioned and rectified, and a first thin film or/and second thin film is/are fed into an iron sheet laminating machine after rectification, so that the iron sheet laminating machine covers one surface or two surfaces of the metal base plate with the first thin film or/and the second thin film to form single-sided or double-sided laminated iron, the single-sided or double-sided laminated iron is fed into the other S turning roller set by the iron sheet laminating machine to be tensioned, and the tensioned single-sided laminated iron is wound by the laminated iron winding machine. The multi-functional laminated iron production line can produce both low-temperature bonded laminated iron and high-temperate melted laminated iron, is advanced iron laminating equipment capable of realizing efficient and continuous production, and can be well adaptive to the change of market requirement.

The invention discloses a controllable-respiration preservative film and a preparation method thereof. The method comprises the following steps: dissolving a water-soluble polyhydroxy plasticizer in water, adding the reaction raw material, heating until the raw material is completely dissolved in water, dispersing at high speed, and cooling to 50-70 DEG C to prepare a solution for running filming; and running the solution for running filming onto a steel belt on a running production line via a die head, and drying to obtain the controllable-respiration preservative film. The controllable-respiration preservative film is prepared from the reaction raw materials in percentage by mass: 60-80% of polyvinyl alcohol, 10-30% of water-soluble polyhydroxy plasticizer, 1-5% of moisture respiration regulator, 1-3% of compatilizer, 3-10% of water retention agent and 0.5-3% of assistant. The preservative film has high barrier property for oxygen and nitrogen sources; the bidirectional permeation exchange power for moisture can be effectively regulated and controlled through the raw material formula; and thus, the preservative film can ensure free respiration and moisture exchange of fruits and vegetables in the preservation process.

The invention discloses an internal air injection discharging double-roller granulator. A roller and a rotary shaft are hollow and are interconnected; one end of the hollow rotary shaft is connected with an air pump; a plurality of shaft air outlet holes are formed in one section, in the hollow roller, of the hollow rotary shaft; roller air outlet holes are formed in the bottom of a surface groove of the hollow roller; the roller air outlet holes are communicated with the hollow roller. Consequently, the airflow discharged by the air pump reaches the hollow roller through the hollow rotary shaft and is ejected out through the shaft outlet holes and the roller air outlet holes in turn, so that particles are separated from the groove in the surface of the roller and enter a collecting device; after granulating once by relatively squeezing the roller once, no particle remains on the surface, so that the next granulation efficiency or the next granulation quality is not affected.

The invention discloses a method for extracting cannabidiol by utilizing supercritical carbon dioxide. The method comprises the following steps: pretreatment: drying flowers and leaves of cannabis at the temperature of 105-120 DEG C for 0.5-4 hours to obtain a material A with the water content of less than 7%; crushing: crushing the material A to 50-100 meshes to obtain powder B; extraction: carrying out supercritical carbon-dioxide extraction on powder C, and after extraction, obtaining liquid D and residue E; separation: by throttling expansion for the liquid D to resolve the cannabidiol, recovering a solvent F; and filtration: adopting an ultramicro filtration membrane with the cut-off molecular weight of 80-120 KD to filter separated cannabidiol. The method disclosed by the invention has the advantages that hemp seed oil in the cannabis is extracted by using the supercritical carbon dioxide, the highest extraction rate of the cannabidiol can reach 90% and the purity of the cannabidiol is more than 20%.

The invention provides a technology for processing film-coated iron. The technology for processing film-coated iron comprises the following steps that a cold-rolled thin collared steel plate (chrome-coated iron) subjected to surface chrome coating treatment is unreeled by an unreeling machine, then is cleaned up, is dried and is put into a preheating device for preheating; and the preheated steel plate is treated by a film pressing device so that the preheated steel plate and a plastic film are compounded by heating. The invention also provides a device for processing film-coated iron. The technology and the device for processing film-coated iron have the advantages that high efficiency, environmentally friendly and low-cost steel plate surface coating is realized; a production process is environmentally friendly; a product has good impact resistance and corrosion resistance; toxic low-molecular residues are not produced; and the technology and the device accord with a modern industrial large-scale production idea of low carbon and environmental protection.

Belonging to the technical field of preparation of aluminum based composite materials, the invention especially relates to a laser weldable aluminum based composite material and a preparation method thereof. The method provided by the invention includes: mixing silicon powder and aluminum powder according to a proportion in a mixing tank uniformly to obtain a powder mixture, and subjecting the powder mixture to cold isostatic pressing, high temperature and high vacuum degassing, and hot isostatic pressing densification treatment, thus obtaining the 100% compact, and internally imporous Si/Al composite billet. The method provided by the invention has the advantages of simple and stable process and low cost, and is one of the preferred methods for preparation of preparation of high reliability and stable quality packaging materials. The Si/Al composite material prepared by the method not only has the characteristics of light weight, low expansion and high thermal conductivity, but also has high and stable mechanical properties, especially has the characteristics of good laser welding technological properties and high air tightness, thus being an advanced aluminum based composite material with an integrated functional structure. And the material can be applied as a hermetic encapsulation shell for microelectronic devices and photoelectric devices.

The invention discloses a preparation method of an amino acid modified attapulgite clay palm oil decolorizing agent. The preparation method comprises: inorganic acid activating treatment of attapulgite clay, amino acid modification of the attapulgite clay, after a certain reaction time filtering and impurity removing, solid-liquid separation, drying and baking, and crushing and sieving, and obtaining of the amino acid modified attapulgite clay palm oil decolorizing agent. The amino acid modified attapulgite clay palm oil decolorizing agent prepared by the preparation method not only has good decolorizing effect, but also can prevent the palm oil oxidation deterioration during storage, and improve the storage security.

The invention discloses a pseudosciaena crocea ice temperature fresh-keeping method, which comprises the steps of: ice spreading box loading, ice water cleaning, fluidized ozone ice pre-cooling, heat insulation box loading and ice temperature storage. The ozone ice and the fluidized ozone ice are sequentially adopted, the dual effects of lowering the fish body temperature and inhibiting the germ propagation are realized, further, the ice temperature storage is adopted, the freezing of the pseudosciaena crocea in the storage process is avoided, the original flavor and the fresh degree of the pseudosciaena crocea are more perfectly maintained, the quality guarantee period of the pseudosciaena crocea is greatly prolonged, and the pseudosciaena crocea is still fresh after being stored for 21 days.

The invention relates to an online particle sampling unit of a minitype fluidized bed and application of the online particle sampling unit. The online particle sampling unit comprises a back blowing system, a reaction system, a scavenging system and a differential pressure sampling system; the back blowing system and the scavenging system, which are independent mutually, are used for back-blowing a sampling tube and scavenging a sampling bottle respectively, inert gas constantly purges the sample tube during sampling, the taken-out catalyst particles are ensured to be from a fluidized bed layer; a three-way valve adjusting part is used to control the flowing of blowback air, sampling and the back pulse jetting of the blowback air, so that particles cannot be left on the sampling tube and the sampling bottle, and the back blowing efficiency is greatly improved; and the catalysts can be quantitatively taken out by pressure control of the differential pressure sampling system and the volume control of the sampling bottle. The online particle sampling unit has the advantages that the catalysts can be quantitatively taken out, the sampling tube and the sampling bottle can be completely back-blown and scavenged, and no residual particles are left.

The invention relates to a wafer grinding process which comprises the following steps: providing a wafer which comprises an active surface and a back surface, wherein, a plurality of protrudent components are formed on the active surface; forming a liquid adhesive for covering a plurality of protrudent components on the active surface of the wafer; pre-curing the liquid adhesive for forming a solid-liquid colloid for covering the active surface of the wafer and filling in a plurality of protrudent component; bonding an adhesive tape on the solid-liquid colloid; implementing the crystal back grinding process on the back surface of the wafer; and removing the adhesive tape and the solid-liquid colloid, thereby exposing a plurality of protrudent components on the active surface of the wafer.

The invention relates to a cleaning device, in particular to an alley cleaning device used for a garden. The alley cleaning device used for the garden is high in work efficiency and clean in sweep. The alley cleaning device used for garden comprises a trolley and the like. A cleaning device is installed on the left side of the top portion of the trolley, and a dust exhaust device is installed on the right side of the top portion of the trolley. The alley cleaning device used for garden cleans an alley through the cleaning device, and exhausts the rubbishes which are cleaned out through the exhaust dust device; a swing device can be driven by the cleaning device to work; the exhaust dust device can be driven by the swing device to work; and the dust collection scope is increased ,so that the cleaning effect is improved.

A patterned photoresist layer forming method and a wafer-stage chip packaging method are disclosed. The wafer-stage chip packaging method comprises following steps: (1) during manufacturing of a patterned photoresist layer used for forming a re-wire arrangement, coating a substrate with a first photoresist layer in a first viscosity being less than 100cp so that the first photoresist layer is a low-viscosity photoresist layer; (2) coating the first photoresist layer with a second photoresist layer in a second viscosity being higher than the first viscosity; and (3) performing exposure and development to the first photoresist layer and the second photoresist layer. Because that adhesivity of the low-viscosity photoresist layer is weaker than that of the high-viscosity photoresist layer, the patterned photoresist layer, compared with a patterned photoresist layer in the prior art, is easier to remove, so that residue of the patterned photoresist layer in through holes is avoided.

The invention belongs to the field of human lubricants, and relates to a formula and a preparation method of a human lubricant. The formula comprises the following components in parts by mass: 0.05-0.5 parts of tremella polysaccharide and 0.1-1.5 parts of preservative. The preparation method of the vaginal lubricant comprises the steps that polyacrylamide resin, glycerol, propylene glycol and 1,3-butanediol are sufficiently mixed; an aqueous medium is uniformly mixed; the preservative is added; and the human lubricant is obtained. Compounded agents used by the natural antibacterial lubricant are good in lubrication, mild in property, colorless and odorless, have no adverse effect on a human, have antibacterial and anti-inflammatory action, can be dissolved in water, are convenient to clean, and cannot remain on the surface of human skin, so that the lubricant is safe and effective.